Source: Pixland/Jupiter

To most of us, frizz is known as an evil spirit that moves in and out of our tresses without warning (and at the worst possible time), bringing with it volume fit for an Einstein convention. But what's actually happening is that when we change environments with different levels of humidity (like going outside), the water vapor disrupts the hydrogen bonds in our hair (a.k.a. the smooth, sleek finish we spent so long creating) and it returns to its natural state ... which is actually frizzy for many people.

So, to find out how we can manipulate our tresses to be smooth through rain or shine (humidity or heat), I turned to Lesley Bride, a hair care expert and senior scientist at Pantene. Her five ways to effectively fight frizz:

1) Start with healthy hair. The healthier the hair, the less susceptible it is to frizz. Tips for healthy hair: frequent cuts and conditioning. Also, let your hair air-dry when possible, and minimize the time you spend brushing and combing.

2) Wash with a frizz-fighting shampoo and conditioner such as Pantene Restoratives Frizz Control Collection. After gentle cleansing, the conditioning agents in the formulas fight frizz by reducing the flow of moisture into the hair, thus minimizing the “Gets Frizzy” effect.

3) Don’t skip a wash. Some will say that washing dries out the hair and makes it look frizzy, only the contrary is true. The sebum (natural oils) can only condition the hair right near your scalp. They are not effective conditioners for your mid-shaft and ends, where you get the frizz. Proper daily shampooing and conditioning can leave your hair in better condition.

4) Leave-in treatments: These are key for friends with big frizz issues. Frizz-control balms not only make hair soft and silky, but some even have gentle stylers to hold the hair in its smooth place.

5) Hairspray at the end of your styling, and don’t mess with it. A good (medium to strong hold) hairspray will help protect against humidity for the day. The secret is to let the hairspray set up for several minutes without touching your hair or the bonds will be disrupted.

Have any of your own frizz-fighting tips or techniques? Do share!

Source: Dave M. Benett/Getty Images

Pictured here at a dinner in honor of Nelson Mandela's 90th birthday, Oprah Winfrey shows us that curls can have their fun and still look fabulous.

Image Source: ThinkStock/Jupiter

Q: What types of supplements can I take (or foods should I eat) to promote strong, healthy hair?
— Meghan B., San Francisco

A: Thank you for your query, Meghan! I've asked David Kirsch, renowned celebrity fitness and diet expert, for his professional advice:

The right vitamins and minerals play a major role in keeping your hair healthy. It is important to include B-6, biotin, folic acid, and minerals such as magnesium, sulfur, silica and zinc in a supplement program to maintain healthy hair. A natural way to get some of these vitamins and minerals is through eating a diet that includes foods like turkey breast, wild salmon, beans and yogurt.

If you're always on the go, try a fast-absorbing nutritional supplement like David Kirsch Super Juice, which was created for clients as an alternative to taking a daily multivitamin pill, and is a powerful wellness booster and beauty enhancer.

Source: Brandon Todd/Splash News

Pictured here at a recent press event in Nashville, Carrie Underwood's golden locks have her shining like the bright star that she is.

Source: Ahmad Elatab/Splash News, ST/Splash News, Jeff Vespa/WireImage

Katie Holmes has spent the past few years reinventing herself. From teen idol to celebrity mom, fashion victim to shopaholic, and TV to film (and now Broadway), she's almost become unrecognizable...
In persona and appearance.

One of the first things to go, post-Tom, were her signature long locks. Katie decided to try a more sophisticated bob and, I think, the bold move paid off. She looked edgy yet elegant. But it seems that was only the beginning, as she's recently gone and cropped it all off. Sigh.

I think this is one of those instances where less isn't more, it's just less... A lot less.

What do you think of Katie's shorter new 'do, love it or hate it?

Source: Splash News

Drew Barrymore proves that a little wool can have you looking quite cool during the summer months.

Source: TW / London Ent / Splash News

If I were the spokesperson for a hair extensions brand (cough... DreamCatchers), I'd think twice before exposing myself on the red carpet. But, in all fairness, I guess Paris does have some experience with that.

Benji Madden's other half was snapped on the red carpet last night, joining the likes of Lindsay, Samantha and Nicky for the grand opening of the Apple Lounge in West Hollywood, California.

What do you think of Paris' falsies faux pas — should she pay a little more attention when placing her plugs, or was this really no big deal?

Source: Bryan Bedder/Getty Images

Source: AP/Getty

Since the moment Halle Berry made her first onscreen appearance, she’s rarely (if ever) had a bad hair day. She’s gone short, curly, straight, and even blonde, without so much as a hair out of place. It’s amazing.

Of course, we can all have a laugh at some of those crazy retro looks, but if you went back I’m sure she looked better than most… Well, better than me anyway!

I personally love that pixie cut she had during the Bond era, but which of Halle’s looks is your all-time favorite?

Source: Valerie Macon/Getty Images